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Apparatus for supercritical fluid extraction

  • US 6,251,267 B1
  • Filed: 03/21/1994
  • Issued: 06/26/2001
  • Est. Priority Date: 07/13/1990
  • Status: Expired due to Fees
First Claim
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1. Apparatus comprising:

  • a plurality of openable sample containers each having a corresponding fluid inlet passageway, a corresponding space for insertion of a sample and a corresponding fluid outlet passageway;

    at least some of said plurality of sample containers being adapted to hold a different one of a corresponding plurality of samples;

    a first transport means;

    said first transport means being adapted to carry said plurality of sample containers;

    a second transport means;

    programming means for causing said first transport means to move a selected sample container and sample to the location of said second transport means;

    a supercritical extractor;

    said programming means including means for causing said second transport means to move said selected container and sample from the said first transport means to a supercritical extraction means;

    means for heating sample container at the place of extraction;

    means for passing fluid at said supercritical condition through the said selected sample container and sample, thereby extracting an analyte from the sample;

    said means for heating including a recess in which the said cartridge means is placed during the said extraction;

    the cartridge means being substantially enclosed as a result of its said placement in the said recess; and

    receiving means for receiving extractant from the sample.

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